Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3M1277E6D19A found under Bolt Close Toleranc by B And B Specialties Inc. The National Stock Number assigned to this part is 5306016003729, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3M1277E6D19A.